package test4.p2;

public class Example {
    public static void main (String [] args){
        Student stu = new Student ();
        stu.Say();
        stu.age=19;
        stu.name="张三";
        stu.Say();
        System.out.println("我的学号是："+stu.number);
        Teacher te = new Teacher ();
        te.name="赵冬";
        te.age=38;
        te.Say();
    }
}
